Home / 9,148.78-12,625.56-5,169.80

Finding the Fourth Proportional to 9,148.78, 12,625.56 and 5,169.80

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Solution

The fourth proportional to 9,148.78, 12,625.56 and 5,169.80 is: 7,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,148.78 : 12,625.56 = 5,169.80 : x
  2. Step 2: Convert to fraction form
    9,148.78/12,625.56 = 5,169.80/x
  3. Step 3: Cross multiply
    9,148.78x = 12,625.56 × 5,169.80
  4. Step 4: Simplify right side
    9,148.78x = 65,271,651.65
  5. Step 5: Solve for x
    x = 65,271,651.65/9,148.78
  6. Step 6: Final answer
    x = 7,134.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.